Released: September 2019 Quarterly Exchange Updates

i think you should mention it.. or explain why we get

G:\>Setup.exe /mode:upgrade /IAcceptExchangeServerLicenseTerms

Microsoft Exchange Server 2016 Cumulative Update 14 Unattended Setup

Copying Files...
File copy complete. Setup will now collect additional information needed for installation.

Languages
Management tools

Performing Microsoft Exchange Server Prerequisite Check

Configuring Prerequisites COMPLETED
Prerequisite Analysis 100%

Setup will prepare the organization for Exchange Server 2016 by using 'Setup /PrepareAD'. No Exchange Server 2013 roles
have been detected in this topology. After this operation, you will not be able to install any Exchange Server 2013
roles.
For more information, visit: https://docs.microsoft.com/Exchange/plan-and-deploy/deployment-ref/readiness-checks?view=exchserver-2016

Setup will prepare the organization for Exchange Server 2016 by using 'Setup /PrepareAD'. No Exchange Server 2010 roles
have been detected in this topology. After this operation, you will not be able to install any Exchange Server 2010
roles.
For more information, visit: https://docs.microsoft.com/Exchange/plan-and-deploy/deployment-ref/readiness-checks?view=exchserver-2016

Active Directory needs to be prepared for Exchange Server but the Active Directory management tools aren't installed on
this computer. To install the tools, install the 'RSAT-ADDS' Windows feature. Alternately, you can run setup.exe
/PrepareAD on a domain controller.
For more information, visit: http://technet.microsoft.com/library(EXCHG.150)/ms.exch.setupreadiness.W2K8R2PrepareAdLdifdeNotInstalled.aspx

Global updates need to be made to Active Directory, and this user account isn't a member of the 'Enterprise Admins'
group.
For more information, visit: http://technet.microsoft.com/library(EXCHG.150)/ms.exch.setupreadiness.GlobalUpdateRequired.aspx

The local domain needs to be updated. You must be a member of the 'Domain Admins' group and 'Organization Management'
role group, or 'Enterprise Admins' group to continue.
For more information, visit: http://technet.microsoft.com/library(EXCHG.150)/ms.exch.setupreadiness.LocalDomainPrep.aspx

Setup encountered a problem while validating the state of Active Directory: Exchange organization-level objects have
not been created, and setup cannot create them because the local computer is not in the same domain and site as the
schema master. Run setup with the /prepareAD parameter on a computer in the domain adt and site
Default-First-Site-Name, and wait for replication to complete. See the Exchange setup log for more information on this
error.
For more information, visit: http://technet.microsoft.com/library(EXCHG.150)/ms.exch.setupreadiness.AdInitErrorRule.aspx

The forest functional level of the current Active Directory forest is not Windows Server 2003 native or later. To
install Exchange Server 2016, the forest functional level must be at least Windows Server 2003 native.
For more information, visit: http://technet.microsoft.com/library(EXCHG.150)/ms.exch.setupreadiness.ForestLevelNotWin2003Native.aspx

The Windows component RSAT-ADDS-Tools isn't installed on this computer and needs to be installed before Exchange Setup
can begin.
For more information, visit: http://technet.microsoft.com/library(EXCHG.150)/ms.exch.setupreadiness.RsatAddsToolsInstalled.aspx

Either Active Directory doesn't exist, or it can't be contacted.
For more information, visit: http://technet.microsoft.com/library(EXCHG.150)/ms.exch.setupreadiness.CannotAccessAD.aspx

The Exchange Server setup operation didn't complete. More details can be found in ExchangeSetup.log located in the
<SystemDrive>:\ExchangeSetupLogs folder.